MLB.com's Carrie Muskat has been covering Major League Baseball since 1981 and is the author of "Banks to Sandberg to Grace: Five Decades of Love and Frustration with the Cubs." You can follow her on Twitter @CarrieMuskat. Here, she blogs about the Cubs.

5/18 Soto needs surgery

Geovany Soto has a tear in the meniscus in his left knee and will undergo arthroscopic surgery, which will sideline him about three weeks. Soto was scratched from Thursday’s lineup against the Phillies because of inflammation in his knee and underwent an MRI on Friday. Steve Clevenger, the Cubs’ backup catcher, is already on the disabled list with a rib cage injury and was scheduled to start taking batting practice on Saturday or Sunday. He was ahead of schedule in his rehab but wasn’t expected to be ready until next weekend. Welington Castillo, who opened the year at Triple-A Iowa, will take over for now. Expect Blake Lalli to be added from the Iowa roster. Darwin Barney is the emergency backup catcher for now.

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